2 * Copyright (c) 2010, Oracle America, Inc.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following
12 * disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 * * Neither the name of the "Oracle America, Inc." nor the names of its
15 * contributors may be used to endorse or promote products derived
16 * from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
23 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
25 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 * $FreeBSD: head/lib/libc/xdr/xdr_sizeof.c 283835 2015-05-31 19:09:24Z rodrigc $
37 * General purpose routine to see how much space something will use
38 * when serialized using XDR.
41 #include "namespace.h"
42 #include <rpc/types.h>
44 #include <sys/types.h>
46 #include "un-namespace.h"
50 x_putlong(XDR
*xdrs
, const long *longp __unused
)
52 xdrs
->x_handy
+= BYTES_PER_XDR_UNIT
;
58 x_putbytes(XDR
*xdrs
, const char *bp __unused
, u_int len
)
67 return (xdrs
->x_handy
);
72 x_setpostn(XDR
*xdrs __unused
, u_int pos __unused
)
74 /* This is not allowed */
79 x_inline(XDR
*xdrs
, u_int len
)
84 if (xdrs
->x_op
!= XDR_ENCODE
) {
87 if (len
< (u_int
)(uintptr_t)xdrs
->x_base
) {
88 /* x_private was already allocated */
90 return ((int32_t *) xdrs
->x_private
);
92 /* Free the earlier space and allocate new area */
94 free(xdrs
->x_private
);
95 if ((xdrs
->x_private
= (caddr_t
) malloc(len
)) == NULL
) {
99 xdrs
->x_base
= (caddr_t
)(uintptr_t)len
;
100 xdrs
->x_handy
+= len
;
101 return ((int32_t *) xdrs
->x_private
);
108 /* Always return FALSE/NULL, as the case may be */
117 if (xdrs
->x_private
) {
118 free(xdrs
->x_private
);
119 xdrs
->x_private
= NULL
;
125 xdr_sizeof(xdrproc_t func
, void *data
)
130 /* to stop ANSI-C compiler from complaining */
131 typedef bool_t (* dummyfunc1
)(XDR
*, long *);
132 typedef bool_t (* dummyfunc2
)(XDR
*, caddr_t
, u_int
);
134 ops
.x_putlong
= x_putlong
;
135 ops
.x_putbytes
= x_putbytes
;
136 ops
.x_inline
= x_inline
;
137 ops
.x_getpostn
= x_getpostn
;
138 ops
.x_setpostn
= x_setpostn
;
139 ops
.x_destroy
= x_destroy
;
141 /* the other harmless ones */
142 ops
.x_getlong
= (dummyfunc1
) harmless
;
143 ops
.x_getbytes
= (dummyfunc2
) harmless
;
149 x
.x_base
= (caddr_t
) 0;
151 stat
= func(&x
, data
);
154 return (stat
== TRUE
? (unsigned) x
.x_handy
: 0);